2743613 - Datahub "Callback URL is required"

- Datahub did not fully started

- Errors like below can be seen in console.log:

2019-01-21 10:09:33,183 [ERROR] [c.h.d.a.e.PoolEventHandler] Could not start Data Hub
java.lang.IllegalArgumentException: Callback URL is required
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:125)
at com.hybris.datahub.api.event.PerformPublicationEvent.createFor(PerformPublicationEvent.java:66)
at com.hybris.datahub.lifecycle.initialization.impl.PendingPublicationsRestartHandler.toQueueEvent(PendingPublicationsRestartHandler.java:41)
at com.hybris.datahub.lifecycle.initialization.impl.PendingPublicationsRestartHandler.toQueueEvent(PendingPublicationsRestartHandler.java:27)
at com.hybris.datahub.lifecycle.initialization.impl.PoolActionRestartHandler.queueAction(PoolActionRestartHandler.java:65)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at com.hybris.datahub.paging.DefaultDataHubPage.forEach(DefaultDataHubPage.java:136)
at com.hybris.datahub.lifecycle.initialization.impl.PoolActionRestartHandler.execute(PoolActionRestartHandler.java:37)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at com.hybris.datahub.lifecycle.impl.DefaultInitializationService.runChain(DefaultInitializationService.java:40)
at com.hybris.datahub.akka.event.PoolEventHandler.preStart(PoolEventHandler.java:67)
at akka.actor.Actor.aroundPreStart(Actor.scala:528)
at akka.actor.Actor.aroundPreStart$(Actor.scala:528)
at akka.actor.AbstractActor.aroundPreStart(AbstractActor.scala:132)
at akka.actor.ActorCell.create(ActorCell.scala:591)
at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:462)
at akka.actor.ActorCell.systemInvoke(ActorCell.scala:484)
at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:282)
at akka.dispatch.Mailbox.run(Mailbox.scala:223)
at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

Datahub 6.6 +

KBA , CEC-SCC-INT-HUB , Data Hub , Problem